More may be added to the earlier biography.
Tirwhit supplemented his wealth by his marriage to the thrice-widowed Cecily Deincourt.
Another threat to Cecily’s possession came from the common-law heir, Purcell’s grandson, Robert Spicer. On 29 Feb. 1440, in an assize of novel disseisin taken at Aylesbury, Tirwhit and his wife won damages of as much as £210 against him for disseising her of her dower lands. Although, however, the legal tide appeared to be running in their favour, they were soon faced with another difficulty. In the following Michaelmas term no less a person than Humphrey, earl of Stafford, brought an action of decies tantum against the assize jurors, asserting that they had taken bribes from the Tirwhits.
Tirwhit’s marriage to Cecily occasioned two others: his eldest son, Adam, married as his second wife Newport’s daughter, Elizabeth; and his daughter, Margaret, married Newport’s son, George.
There is little else to add to the earlier biography. It was probably as a reward for his service in France that, on 31 July 1423, Sir William was granted the stewardship of the duchy of Lancaster lordship at Belchford in Lindsey at a fee of £10 p.a.
